Self-serve and check by key lock



NOV., 5, 1940. H GRAlNGER 22209786 I SELF-SERVE AND CHECK BY KEY LOCK i l Filed June 1'7, 1940 INVENTOR ATTO RN E Y Patented Nov. 5, 1940 UNITED STATES PATENT OFFICE SELF-SERVE AND GHECK Biz- KEY LOCK v Hampton Grainger, Detroit, Mic-l1.r Y

Application June 17, 1940; serrano. 340,901 I colaims. (01.704262). j l

into its respective cylinder lock, and vice-versa,l

so as to provide a simple check system for the taking of an object which is securely chained or fastened to one of said keys. Thus, with the key attached to the object held in locked relation to its cylinder lock, a person provided with a key to the other cylinder lock may upon desiring to take the object insert said key into said other cylinder lock, turn the same, to permit movement of the rst mentioned cylinder lock to a position where the key held therein may be removed with said object; the key in said other cylinder lock being then held therein against removal to serve as a check indicating the Aperson responsible for the taking of said object.

With the foregoing and other objects in view, the invention resides in the novel arrangement and combination of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is illustrated in the accompanying drawing, wherein:

Figure 1 is a front elevational view of a panel provided with a pair of cylinder locks.

Figure 2 is a rear elevational View of the panel showing connecting mechanism between the cylinder locks.

Figure 3 is a transverse sectional view taken on line 3 3, Figure 2.

Referring to the drawing, I denotes the key panel which is to be aixed to any suitable supporting structure such as a wall, and mounted on the panel Ill vare two cylinder locks II and I2. Formed on the panel II! are two parallel side walls I3 and lllfwhich with the panel I0 dene a housing for the support of the key lock mechanism to be hereinafter described. The cylinder locks II and I2 are of any conventional type each provided respectively with a rotating key receiving sleeve I5 and I5 and projecting stem I1. Between the side walls I3 and I4 there is a partition wall I3 arranged parallel to the panel VI E) and in spaced relation to the inner ends of the cylinder locks,

the stem I1- of said key'sleeve.

as clearly shown in Fig. 3; the partition wall I8 being rigidlyY secured to the panel II) in any desired manner. Each of the cylinder locks is provided with a pair of diametrically opposed ears :"(onlyione ofwhich is shown in Fig. 3) eachl adapted to receive the end of a bolt 2I supported by the partition wall I8. Lock nuts 22 and 23 provided on the bolts 2I` serve to securely fasten ythe cylinder locks II and I2 to the panel I0 in`` the manner readily apparent. In order to rein\'10 force andstre'ngthen the partitionvwall I8 there is provided a pair of vertical supporting brackets 24 and 25 disposed between the vertical center planes passing through the centers of the cylinder,n Each supporting locks II and' I2, see Fig. v2; bracket comprises a lower horizontal leg 26 lying 'flush with the lower edgeof the panel I0 and an upper horizontal leg 21 lying somewhat below the upper edge of the panel IU, both legs terminating in abutment flanges 28 and 29 respectively for attachment to the panel IIJ in any desired manner not shown.

On each of the supporting brackets24 and 25, there isrespectively mounted a rearwardly eX- tendingVr channel shaped stop member 3| and 32,;

the web 33 of each being fastened to its respective supporting bracket by rivets 34.Y- The upper 'leg l35 denes a stop fora purpose to be herein- .afterdescribed and the lower leg 36 of each eserves as a support forr one end of a strap 31S rigidly fastened to'said legs as by the rivets 38. The stop or le`g35 and the support orr leg 36 are parallel and extend horizontallyto the vertical support brackets 24 and 25.

Providedinthe partition wall I8 are a pair of l circular openings 4I) (only'one of which is shown),

A stub `each arranged co-axial with the axis of the key sleeves I5 and I6 of the cylinder locks. Vshaft 4I formed to provide at -one end a square lhead 442 and at'it's other end portion, a reduced vented by the nut45 in one direction and by the shoulder 46 on the stub shaft in the other direction. The threaded end 44 of the stub shaft terminates in spaced ,relation to its respective `key sleeve and is slotted as at A4l to receive therein movement of the key sleeve by a key 50 inserted therein for opening or closing, the cylinder lock Thus, a turning 4withthe stop 35. f direction' the key is turnedl to move the' key slot will rotate the stub-shaft 4| in one or the other direction.

On the square heads 42 of the stub shafts 4| there is respectively mounted the arm 5| and 52. The lower end of each arm is provided with a lateral extension or ange 53 for seating engagement with a side of its associated square head, each arm being rigidly secured to its associated square head by means of a screw bolt 54. This construction thus insures va positive connection of the arms with thestub-shafts. The arms 5| and 52 are so related that one is vertical when its associated cylinder lock is closed or locked and the other is horizontal when its associated cylinder lock is open orunlocked. YIn other words the setting of the cylinder locks II and l2 is such that when the key slot 56, see dotted lines Fig. 2, of cylinder lock is hori- Zontal, the cylinder lock is locked and the key in said key slot cannot be pulled out, for this position of the key. slot -56 of the key sleeve |5,the arm 5| is attached to the square head 42 of the stub shaft 4| as to lie in a vertical position. For the other cylinder lock 2, the s'etting requires that its'key slot' 51, see dotted lines Fig. 2, be vertical so thatthe key in said slot may be insertedor removed, the'cylinderilock I2 being thus-y open or unlocked, and for this position of the key slotv 51 ofv the key sleeve I5,"

the arm 52 is attached to the square head 42 of its associated stub `shaftflll as to lie in a hori- Zontal position in a direction towards the arm 5|, and in abutment with the stop 35 of its adjacent stop'member- 32. 'I'he arms 5| and 52 are of the same length, vand pivotally connected at its ends as at 58 and-59 to the free ends of the arms 5| and-52 is a rigid linkSO. On the strap -31 there is an eye 6| to which is attached one end of a tension coil spring-62,-the other end of said spring engaging an opening 63 in the center of the link v65. The spring 62 acts to hold the arm 5| or 52 against its respective associated stop.

It is thus-seen that the two cylinder locks and |2are linked togetherso that when one of the key sleeves is turned approximately 90 the other key sleeve also turns in thesamey direction approximately 90, and as the key slots of the key sleeves are set one vertical and the other horizontal it is obvious that a `key 'may be inserted or removed from the vertical' key slot while the key placed in the horizontalkey slot cannot be removed,as viewing' Fig. 21, it -will be observed that turning of the arm'5l (which is Xedto the key sleeve of thev cylinder lock Il) counterclockwise is prevented by the linkl 60, the lower endthereof'and the arm 52 being'inengagement The varrow A `indicates the 56'to the horizontal position for locking the key and moving the arm 5| to vertical position. Ihus to unlock the cylinder lock to permit ,'removal 'of the key,'the key must 'be turned counterclockwise viewing arrow A. Fig. 2, which movement as indicated above is prevented by the' link 69 and arm'52 engaging the stop35. Further, this limit toA movement of' the linke and arm 52 is occasioned by the fact that the pivot 59 lies below the center line intersecting the axes of the pivot 58 and stub-shaft 4|.

The keyalocated in the vertical key slot 51 of the cylinder lock I2 may then be removed, or it may be inserted into the key slot 51 and by turning in the direction of the arrow Bv viewing Fig. 2,v ora quarterturn," the arm' 52 is raised to a vertical position and the arm 5| lowered to a horizontal position where it engages its adjacent stop 35, thus locking the key in the cylinder lock |2 and permitting removal of the key in the cylinder lock This arrangement of the cylinder locks |I and |2 and their interconnection is susceptible of a variety of uses. For example, the device may be used as a checking system where one of the .keys may-havechained-thereto an-Object such l0 as a tool, implement, vacuum-cleaner, etc., so that a person provided with a key for the other cylinder lock, upon insertion of said key (referring to Fig. 2) into the cylinder lock I2 and turning thereof,there will result a turning of l5 the-key in the cylinder lock |I to its vertical or unlocked position whereupon it may be re- `moved` along with the object fastened thereto.

The. key held in the cylinder lock I2 serves as a check to indicate who has taken the object. 20 Upon return of the'object the key fastened there- A to is inserted in its cylinder lock Il and turned, thus being held therein and permitting removal .of the-key -in' the cylinder lock f I2, the yobject beingthen retained locked to the panel. :25

Havingthus'set forth and disclosed the nature ofthis inventiongwhat is claimed is:

1. A key vlock and check `device comprising a 4 housing including aupanel adapted for attachment to a supportingstructure, a pair of cylinf 30 der locks mounted on said panel, a partition wall in said housing parallel to said panel, means rigidly securing said vcylinder'locks to said partition'wall and paneLa Ykey receiving cylinder in each cylinder lock,4 a'stub-shaft rotatably sup- 535 ported' by said partition wall in opposed co-axial relation to each keyzcylindergmeans connecting each key cylinder with its'respectiveopposed stub-shaft, lever and `link means interconnecting saidstub-shafts, the arrangement of said lever and linkmeans and the relationship of said cylinder locks being such thatwhen one or the other of said cylinder locks is'in an unlockedyposition theother of said cylinder locks is inza`locked position, including a pair of stop means adapted .45

to be alternately engaged'fbyzsaid lever and link means-such as topreventvturning .of the key cylinder of the cylinder-lock in locked position, whereby removalof the key in sai'dkeycylinder isprevented.

l2. A key lock andcheck device comprising .a housing including a panel adapted for yattachment toa'suppo-rting structure, a -pair oficylinvder locks mounted `on said panel, a partition wall in said housing parallel to saidpanel; removable T55 bolt means rigidly securing saidv cylinder'locks to said partition walland panel, a key receiving cylinder in each Ycylinder -lock, a stub-shaft'rotatably supported by said partitionwall-in op- `posedcoaxi'al'relation to eachl` key cylinder, the-00 end of each stub shaft opposite the key cylinders being slotted, stem.mea'ns connecting eachkey cylinderl with thel slot -ffits respective opposed stub-shaft, lever andlnk means interconnecting said 'stub-shafts, comprising a lever -fixed to 65 each vstub-shaft, one arrangedvertical andthe other Yarranged horizontal and directed towards the vertical lever, and a link connecting the free ends of said levers, the arrangement of --said lever and link means and the relationship of said "70 cylinder locksbeingsuch that ywhen one or the other of said cylinder locks is in an unlocked position the other' of said cylinder locks is-in a locked position.

3. A key lock and che'ckdevice comprising a 7-5 housing including a panel adapted for attachment to a supporting structure, a pair of cylinder locks mounted on said panel, a partition wall in said housing parallel to said panel, removable bolt means rigidly securing said cylinder locks to said partition wall and paneLa key receiving cylinder in each cylinder lock, a stub-shaft rotatably supported by said partition wall in opposed co-axial relation to each key cylinder, the end of each stub shaft opposite the key cylinders being slotted, stem means connecting each key cylinder with the slot of its respective opposed stub-shaft, lever and link means interconnecting said stub-shafts, comprising a lever xed to' each stub-shaft, one arranged vertical and the other arranged horizontal and directed towards the vertical lever, and a link connecting the free ends of said levers, the arrangement of said lever and link means and the relationship of said cylinder locks being such that when one or the other of said cylinder locks is in an unlocked position the other of said cylinder locks is in a locked position, including a pair of stop means each adapted to be alternately engaged by a lever such as to prevent turning of the key cylinder of the cylinder lock in locked position, whereby removal of the key in said key cylinder is prevented.

4. A key lock and check device comprising a housing including a panel adapted for attachment to a supporting structure, a pair of cylinder locks mounted on said panel, a partition wall in said housing parallel to said panel, removable bolt means rigidly securing said cylinder locks to said partition wall and panel, a key receiving cylinder in each cylinder lock, a stubshaft rotatably supported by said partition wall in opposed co-axial relation to each key cylinder, the end of each stub-shaft opposite the 40 key cylinders being slotted, stem means connecting each key cylinder with the slot of its respective opposed stub-shaft, lever and link means interconnecting said stub-shafts, comprising a lever fixed to each stub-shaft, one arranged ver- 45 tical and the other arranged horizontal and directed towards the vertical lever, and a link connecting the free ends of said levers, the arrangement of said lever and link means and the relationship of said cylinder locks being such 50 that when one or the other of said cylinder locks is in an unlocked position the other of said cylinder locks is in a locked position, including a vertical support bracket arranged adjacent each cylinder lock outwardly of said partition wall, 55 a stop secured to each support bracket, said hori zontal lever being mounted on the stub-shaft connected to the key cylinder of the cylinder lock in locked position and engaging its associated stop whereby turning of said key cylin- 60 der and removal of the key therein is prevented. 5. A key lock and check device comprising a. housing including a panel adapted for attachment to a supporting structure, a pair of cylinder locks mounted on said panel, a partition wall in said housing parallel to said panel, means rigidly securing said cylinder locks to said partition wall and paneL-a key receiving cylinder in each cylinder lock, a stub-shaft rotatably supported by said partition'wall in opposed cio-axial relation to each key cylinder, means connecting each key cylinder with its respective opposed stub-shaft, lever and link means interconnecting said stub-shafts, the arrangement of said lever and link means and the relationship of said cylinder locks being such that when one or the other of said cylinder locks is in an unlocked position the other of said cylinder locks is in a locked position, including a pair of stop means adapted to be alternately engaged by said lever and link means such as to prevent turning of the key cylinder of the cylinder lock in ylocked position, whereby removal of the key in said key cylinder is prevented, and spring means acting on said lever and link means to hold the same against said stop means.

6. A key lock and check device comprising a housing including a panel adapted for attachment to a supporting structure, a pair of cylinder locks mounted on said panel, a partition wall in said housing parallel to said panel, removable bolt means rigidly securing said cylinder locks to said partition wall and panel, a key receiving cylinder in each cylinder lock, a, stub-shaft rotatably supported by said partition wall in opposed co-axial relation to each key cylinder, the end of each stub-shaft opposite the key cylinders being slotted, stem means connecting each key cylinder with the slot of its respective opposed stub-shaft, lever and link means interconnecting said stub-shafts, comprising a lever xed to each stub-shaft, one arranged vertical and the other arranged horizontal and directed towards the vertical lever, and a link connecting the free ends of said levers, the arrangement of said lever and link means and the relationship of said cylinder locks being such that when one or the other of said cylinder locks is in an unlocked position the other of said cylinder locks is in a locked position, including a vertical support bracket arranged adjacent each cylinder lock outwardly of said partition wall, a stop secured to each support bracket, said horizontal lever being mounted on the stub-shaft connected to the key cylinder of the cylinder lock in locked position and engaging'its associated stop whereby turning of said key cylinder and removal of the key therein is prevented, a bar bridging said support brackets and secured thereto, and a tension coil spring Xed at one end to an intermediate portion of said bar and at its other end to an intermediate portion of said link to hold the horizontal lever against its associated stop. l

HAMPTON GRAINGER. 

